Overflow for feed water heaters



(No Model.)

G. A. OTIS.

OVERFL-OW FOR FEED WATER HEATERS. -No. 278,590. Patented May 29,1883.

. a. may.

N. PETERS. Fholo-Lilhngnphur, Washington, DIQ

. UNITED-[STATE Fries.-

enoneea o ris, or BUFFALO, new XORK.

I OVERFLOW FOR FEED-WATER HEATERS.

SPECIFICATION formingpart of Letters Patent I\lo.'278,590, dated May 29,1883.

Application filed November4,18s2. (No model.) I

7 To all whom. t't anay concern! ers and similar apparatus for carryingoft the excess of water from the surface of the accumulated body ofwater; and the object of my invention is to construct the overflow insuch manner that it will operate to remove the scum and other lightimpurities which accumulate on the surface ofthe body of water containedin the apparatus. 1 Y

My invention consists to that end in providing the mouth of theoverflow-pipewith an enlargement or pan, which surrounds the mouth ofthe overflow-pipe, and serves as a receptacle. for the scum and conductsthe scum to the mouth of the pipe, which is closed byfasuitablefloat-valve, as will be herein after fully described, and pointed out inthe claims. 1

In the accompanying drawings, Figure l is a. section of a feed-waterheaterprovided with my improved overflow. Fig. 2 isa horizontal sectionin linear :r,-Fig. 1. i i

Like letters of reference refer to like parts in both figures.

1 Arepresents the casing or shell ofthe heater, which may be ofcylindrical or other suitable form, and be constructed of iron, wood, orother suitable material.

B represents thehead of the case, and O the bottom thereof.

' d represents the pipe through which the exhaust-steam enters theapparatus, and I) an enlarged mixing-chamber which forms a continuationof the pipe d, andwhieh depends from the cover B into the shell of theheater.

6 represents the pipe through which the and bring the same in intimatecontact with the exhaust-steam which enters through the [pipe d, boththe steam. and water escaping from the mixing-chamber through the openlower end thereof into the shell A. r I

F represents the vapor-escape pipe, which is-eonnected with the upperportion of the apparatus. Allot' these parts may be of any suitableandwell-known construction. I

g represents the overflow-pipe, secured in an upright position in thelower head or bottom, 0, and extending upwardly into the shell A.

the upper end of the overflow-pipe, and which is secured tosaid pipe bymeans of a setscrew, h,;or by a screw-thread or other suitable means. I

I represents the valve,

surface of the body of water, and whiehserves to open the valve when thewater-level rises above the desired point. The arm jis pivoted to'thepan G at l, and provided with a of the valve. The water which hasbecome heated by contact with the exhaust-steam accumulates in the lowerportion of the apparatus, andthe scum and other light impuritiescontained in the water rise to the surface and pass over into the pan G,which latter retains the scum'and prevents the same from flowing backinto the body of water and mingling therewith. The float is preferablyso arranged that the valve will open and discharge the scumbefore theelearwater rises to the upper edgeof the scum-pan.

heated water passes from the lower part of the shell A to the feed-pumpor other device, whereby it is conveyed to the boileror other apparatusin which it is desired to he used. It the supply of water to theapparatus exdrawn through the pipe 70, the excess of water is dischargedthrough the overflowpipe g. i

I claim as my inventionwith an overflow-pipe, g, of a scum-pan, G,surrounding the mouth of said pipe, a valve, 1, sea-ted in theoverflowpipe, and afloat, J,

G represents thescuni-pan, which surrounds which is applied to y theupper end of the overflow-pipe 9 within the scum-pan G. The valve isattached to the arm j of a float, J, which floats upon the 7c representsthe pipe through which the nose, m, which limits the opening movementceeds the quantity of water which is with 1. In a feed-water heater, thecombination,

attached to said vnlve, substantially as set seated in theoverflow-pipe, and a pipe, is,

forth 7 2. The combination, in a feed-water heater, of a steam-pipe, 01,provided with a. mixing- 5 chamber, D, a water-supply pipe, 6, providedwith a spray device, E, an overflow, g, provided with a scum-pan, G, afloat-valve, I,

through which the heated Water passes from the apparatus, substantiallyas set forth.

GEORGE A. OTIS. Witnesses:

JNO. J. BONNER, O. E. KENDALL.

